Converting to swift 3.0 about swiftocr HOT 1 CLOSED

extension Array where Element: _ArrayProtocol {

    func transpose() -> [Element] {
        if self.isEmpty { return [Element]() }
        let count = self[0].count
        var out = [Element](repeating: Element(), count: count)
        for outer in self {
            for (index, inner) in outer.enumerated() {
                out[index].append(inner)
            }
        }
        return out
    }
}